It's easy to set up a single GNU/Linux server, but there's no obvious way to take those same skills and build functional clusters. If you want to do that, you need a whole new class of tools. At Four Kitchens, we've done the hard work: we maintain an in-office lab to develop and apply cluster-level integration and management techniques to the challenging problems we encounter managing our clients' infrastructure. We'd like to show you what we've learned in our lab and in the field.